【Cup holder friendly】: Our tapered shape with ergonomic handle fits all standard car cup holders making it the ideal travel mug.【Premium construction】: 40oz tumbler with straw is made of premium 18/8 food grade stainless steel making it stain and odor resistant.【Leak Spill Proof】: Our special x-seal lid screws on forming a tight seal preventing leaks and spills even if accidently knocked over.【Easy to clean】: Easily hand wash through wide opening.【Whats in the box】: 40oz stainnless steel insulated tumbler, screw on x-seal lid and straw, Tumbler can be used with straw or simply remove lid to easily sip or gulp.【Other uses】: Tumbler makes a great gift for all occasions such as Birthdays, Retirement, Graduation, Valentines day.